Embedded Artists LPCXpresso, User Manual

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LPCXpresso Base Board rev B - User’s Guide Page 6
Copyright 2011 © Embedded Artists AB
2 Introduction
Thank you for buying Embedded Artists’ LPCXpresso Base Board , designed for the LPCXpresso
Board (with multiple targets LPC176x, LPC1343, LPC1227, LPC11C24, LPC11U14, LPC1114, and
more to come) and the mbed module from NXP.
This document is a User’s Guide that describes the LPCXpresso Base Board hardware design. The
general focus will be for the LPCXpresso boards but differences for the mbed module will be noted. All
differences between different LPCXpresso target boards as well as mbed are gathered in a separate
chapter;
6 mbed and LPC1xxx Differences .
2.1 Features
The LPCXpresso Base Board makes it possible for you to get started with experiments and prototyping
immediately with the LPCXpresso Board . The LPCXpresso Base Board can also be used together with
the mbed module.
The board has been design in cooperation with several Universities in order to also be suitable for
training and education situations. The many on-board peripherals easy your learning curve and speed
up your program development. The features of the LPCXpresso Base Board are:
Common features

Socket for LPCXpresso and mbed module

50 pin expansion dual row pin list connector (male, 100mil pitch) for
simple connection external designs and to a logic analyzer

50 pin expansion dual row header connector (female, 100mil pitch) for
simple connection to breadboard

Battery powering (small coin battery)

USB interface

Reset pushbutton
Digital IO 
RGB-LED (can be PWM controlled)

5-key joystick switch

2 pushbuttons, one for activating target mcu on-chip bootloader

Rotary switch with quadrature encoding (timer capture)

Temperature sensor with PWM output (timer capture)
Analog IO

Trimming potentiometer input (analog input)

PWM to analog LP-filtering (PWM output and analog input)

Speaker output (PWM output)

Oscilloscope probe inout stage
Serial bus - SPI 
Shift register driving 7-segment LED

SD/MMC memory card interface

Dataflash SPI-NOR flash
Serial bus - I2C 
PCA9532 port expander connected to 16 LEDs

8kbit E2PROM

MMA7455L accelerometer with I2C interface

Light sensor
Serial bus - I2C/SPI
shared

SC16IS752 - I2C/SPI to 2xUART bridge; connected to RS232 full-modem
interface and one expansion UART

96x64 pixel white OLED (alternative I2C/SPI interface)
Serial bus - UART 
USB-to-serial bridge, with functionality for automatic ISP activation (note:
no such support for LPC176x and
mbed )